Sebastian Vettel extended his championship lead on Sunday by winning the Malaysian Grand Prix at Sepang.

"In the heat we stayed cool," said the reigning world champion and Red Bull driver, who is now 24 points ahead of McLaren's Jenson Button, who finished second on Sunday.

German Vettel's win was despite apparent reliability problems for the KERS system aboard both RB7 cars.

Lewis Hamilton faded in the last part of the race and was further slowed with a hit from behind by Fernando Alonso, but with Button within sight of the winner (although Vettel may have been cruising to save the car), McLaren is confident for the coming races.

Despite having to run most of the race without KERS on his Red Bull, the defending World Champion drove a perfect race from the start. Most people in the paddock know Vettel is the best driver in F1 right now and he added to his status by making it four wins in a row - the first two races of the 2011 season, plus the final two races of the 2010 season. It is Vettel's 12th career F1 win in a short career span.

Mark Webber chased Nick Heidfeld hard in the final laps but couldn't get past, finishing in fourth place in the second Red Bull, followed by Felipe Massa in the Ferrari in fifth place

Fernando Alonso was right behind his teammate in sixth place, followed by Lewis Hamilton in the second McLaren in seventh place, Kamui Kobayashi in the Sauber-Ferrari in eighth place, Michael Schumacher in the Mercedes GP in ninth place, and Paul di Resta finishing with the final point in his Force India-Mercedes in tenth.

Vettel grabs the lead at the start

While Vettel had a clean start, it was a bit of chaos behind him and his teammate Mark Webber was the biggest loser with Heidfeld the big winner. Webber, who reported a KERS problem before the start of the race, could do nothing as cars passed him as if he was towing an anchor.

As a result Heidfeld emerged in 2nd place followed by the two McLarens, Vitaly Petrov and the two Ferraris. Webber found himself stuck behind Michael Schumacher who was in eighth.

With Vettel in control at the front, the battles between Hamilton, Button, Alonso, Webber and Heidfeld were exciting. As was expected with the new rules and tires, there were plenty of overtaking moves from just about everyone down the field.

Pit stops were again crucial role as most of the front-runners opted for three stops and the third-round of stops proved to be the important ones for McLaren as Button pipped his teammate to for 2nd place after Hamilton had problems with the front-left tire.

Lewis Hamilton

With Hamilton struggling, Alonso soon found himself right on the McLaren driver's tail. Hamilton though held his ground and forced a mistake from Alonso. Alonso became frustrated and drove into the back of Hamilton. Both drivers were forced to stop again and they both dropped to sixth and seventh. Both have been summoned by the race stewards.

Hamilton blamed a poor start for his difficult race and it all started when he lost out to Nick Heidfeld at the start after a strong start from the Renault driver. Despite making his way past the Heidfeld during the pit stops, Hamilton’s race took a turn for the worse after losing time with a wheel nut issue while making his last stop.

"This is racing I guess...", Hamilton told BBC Sport after the race. "Well I started second and did everything I could to keep up and I don't really have too much to say, really."

When asked if the race started to go downhill after contact with Alonso, the McLaren driver replied: "No...it started from getting stuck behind Heidfeld (at the start), I had Jenson on the inside and Heidfeld on the outside so I was really squashed into Turn 1, that was an awful position to be in, but that's that way it goes sometimes."

Results

POS

DRIVER

NATIONALITY

ENTRANT

LAPS

BEHIND

1.

Sebastian Vettel

Germany

Red Bull-Renault

56

0.000s

2.

Jenson Button

Britain

McLaren-Mercedes

56

3.261

3.

Nick Heidfeld

Germany

Renault

56

25.075

4.

Mark Webber

Australia

Red Bull-Renault

56

26.384

5.

Felipe Massa

Brazil

Ferrari

56

36.958

6.

Fernando Alonso

Spain

Ferrari

56

37.248

7.

Lewis Hamilton

Britain

McLaren-Mercedes

56

49.957

8.

Kamui Kobayashi

Japan

Sauber-Ferrari

56

1m06.439

9.

Michael Schumacher

Germany

Mercedes GP

56

1m24.896

10.

Paul di Resta

Britain

Force India-Mercedes

56

1m31.563

11.

Adrian Sutil

Germany

Force India-Mercedes

56

1m41.379

12.

Nico Rosberg

Germany

Mercedes GP

55

1 Lap

13.

Sebastien Buemi

Switzerland

Toro Rosso-Ferrari

55

1 Lap

14.

Jaime Alguersuari

Spain

Toro Rosso-Ferrari

55

1 Lap

15.

Heikki Kovalainen

Finland

Lotus-Renault

55

1 Lap

16.

Timo Glock

Germany

Virgin-Cosworth

54

2 Laps

17.

Vitaly Petrov

Russia

Renault

52

DNF, Damage

18.

Vitantonio Liuzzi

Italy

HRT-Cosworth

46

DNF

19.

Jerome d'Ambrosio

Belgium

Virgin-Cosworth

42

DNF

20.

Jarno Trulli

Italy

Lotus-Renault

31

DNF

21.

Sergio Perez

Mexico

Sauber-Ferrari

23

DNF

22.

Rubens Barrichello

Brazil

Williams-Cosworth

22

DNF

23.

Narain Karthikeyan

India

HRT-Cosworth

14

DNF

24.

Pastor Maldonado

Venezuela

Williams-Cosworth

8

DNF

FASTEST LAP: Mark Webber Australia Red Bull-Renault 1:40.571

"We will run a new floor in China on Friday," revealed team boss Martin Whitmarsh.

Said Button: "The step we've made from the last race to here is very impressive."

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